Challis, ID. Direct Normal Data Challis, ID. Hourly Average Direct Normal Data For 2009 to 2010 Latitude: degrees Longitude: degrees Altitude: meters Mon\Hr 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Total Jan 0 0 0 0 0 7 123 202 249 300 302 311 298 159 2 0 0 0 1954 Feb 0 0 0 0 7 126 245 338 396 466 443 337 345 327 85 0 0 0 3114 Mar 0 0 0 0 152 410 513 559 586 598 511 423 389 328 257 46 0 0 4772 Apr 0 0 0 98 373 517 585 556 565 533 490 442 407 370 286 146 4 0 5371 May 0 0 35 211 320 362 429 407 323 311 324 340 313 314 274 164 31 0 4158 Jun 0 0 119 315 405 489 518 530 534 475 494 491 465 410 341 301 207 4 6096 Jul 0 0 76 516 680 753 767 795 816 770 694 662 626 572 550 462 240 1 8980 Aug 0 0 0 236 505 620 640 653 696 647 585 535 504 447 388 293 46 0 6794 Sep 0 0 0 49 515 685 755 743 758 762 743 671 586 509 414 93 0 0 7281 Oct 0 0 0 0 135 350 464 535 558 539 513 475 383 309 81 0 0 0 4343 Nov 0 0 0 0 3 221 338 416 483 506 448 425 316 121 0 0 0 0 3278 Dec 0 0 0 0 0 39 259 315 410 424 417 393 290 52 0 0 0 0 2600 Values in Watt hours/meter^2 per hour Challis, ID. Daily Average Direct Normal Data For 2009 to 2010 Latitude: degrees Longitude: degrees Altitude: meters Year\Mth Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 2009 ---- ---- ---- ---- ---- ---- 8.04 6.25 7.53 4.24 4.40 3.19 ---- 2010 1.95 3.11 4.77 5.37 4.16 6.10 9.93 7.33 7.03 4.45 2.16 2.01 4.88 Average 1.95 3.11 4.77 5.37 4.16 6.10 8.99 6.79 7.28 4.34 3.28 2.60 4.91 % SD ---- ---- ---- ---- ---- ---- 15 11 5 3 48 32 Values in average daily KWhr/meter^2 per Day * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.